<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>操作失败</title>
    <script>
        window.onload=redirect;
        function redirect(){
            var count = 5;
            var time = document.getElementById("time");
            setInterval(()=>{
                time.innerHTML=count--;
                if(count == 0){
                    location.href='login.html';
                }
            },1000);
        }
    </script>
</head>
<body>
    使用此功能，必须先登录。。。
    <br>
    <span id="time"></span>秒后跳转至登录页面...<a href="login.html">立即前往</a>
</body>
</html>